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https://github.com/zint/zint
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#209 font.h guard; improve gs1 c82 check, code1 num_digits
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@ -311,20 +311,14 @@ static int is_last_single_ascii(const unsigned char string[], const int length,
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return 0;
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}
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/* Return length of numeric sequence from position `sp`, stopping after `max` if given (non-zero) */
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static int digits_ahead(const unsigned char string[], const int length, const int sp, const int max) {
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int i, end;
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if (max && sp + max < length) {
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end = sp + max;
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} else {
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end = length;
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}
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for (i = sp; i < end; i++) {
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if (string[i] < '0' || string[i] > '9') {
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break;
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/* Initialize number of digits array (taken from BWIPP) */
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static void set_num_digits(const unsigned char source[], const int length, int *num_digits) {
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int i;
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for (i = length - 1; i >= 0; i--) {
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if (source[i] >= '0' && source[i] <= '9') {
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num_digits[i] = num_digits[i + 1] + 1;
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}
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}
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return i - sp;
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}
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/* Copy C40/TEXT/EDI triplets from buffer to target. Returns elements left in buffer (< 3) */
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@ -414,7 +408,7 @@ static int decimal_unlatch(char decimal_binary[24], int db_p, unsigned int targe
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}
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/* Number of codewords remaining in a particular version (may be negative) */
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static int codewords_remaining(struct zint_symbol *symbol, int tp) {
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static int codewords_remaining(struct zint_symbol *symbol, const int tp) {
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int i;
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if (symbol->option_2 == 10) { /* Version T */
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@ -455,7 +449,8 @@ static int c40text_cnt(const int current_mode, const int gs1, unsigned char inpu
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}
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/* Copy `source` to `eci_buf` with "\NNNNNN" ECI indicator at start and backslashes escaped */
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static void eci_escape(const int eci, unsigned char *source, const int length, unsigned char *eci_buf, const int eci_length) {
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static void eci_escape(const int eci, unsigned char *source, const int length, unsigned char *eci_buf,
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const int eci_length) {
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int i, j;
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j = sprintf((char *) eci_buf, "\\%06d", eci);
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@ -482,12 +477,15 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], unsigne
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int eci_length = length + 7 + chr_cnt(source, length, '\\');
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#ifndef _MSC_VER
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unsigned char eci_buf[eci_length + 1];
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int num_digits[eci_length + 1];
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#else
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unsigned char *eci_buf = (unsigned char *) _alloca(eci_length + 1);
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int *num_digits = (int *) _alloca(sizeof(int) * (eci_length + 1));
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#endif
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sp = 0;
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tp = 0;
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memset(num_digits, 0, sizeof(int) * (eci_length + 1));
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/* Step A */
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current_mode = C1_ASCII;
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@ -499,23 +497,27 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], unsigne
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gs1 = 0;
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}
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if (gs1) {
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if (length >= 15 && digits_ahead(source, length, 0, 15) == 15) {
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set_num_digits(source, length, num_digits);
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if (length >= 15 && num_digits[0] >= 15) {
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target[tp++] = 236; /* FNC1 and change to Decimal */
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next_mode = C1_DECIMAL;
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} else if (length >= 7 && digits_ahead(source, length, 0, 0) == length) {
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} else if (length >= 7 && num_digits[0] == length) {
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target[tp++] = 236; /* FNC1 and change to Decimal */
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next_mode = C1_DECIMAL;
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} else {
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target[tp++] = 232; /* FNC1 */
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}
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/* Note ignoring ECI if GS1 mode (up to caller to warn) */
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} else if (symbol->eci) {
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} else {
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if (symbol->eci) {
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target[tp++] = 129; /* Pad */
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target[tp++] = '\\' + 1; /* Escape char */
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eci_escape(symbol->eci, source, length, eci_buf, eci_length);
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source = eci_buf;
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length = eci_length;
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}
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set_num_digits(source, length, num_digits);
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}
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do {
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if (current_mode != next_mode) {
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@ -539,11 +541,11 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], unsigne
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/* Step B - ASCII encodation */
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next_mode = C1_ASCII;
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if ((length - sp) >= 21 && digits_ahead(source, length, sp, 21) == 21) {
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if ((length - sp) >= 21 && num_digits[sp] >= 21) {
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/* Step B1 */
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next_mode = C1_DECIMAL;
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db_p = bin_append_posn(15, 4, decimal_binary, db_p);
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} else if ((length - sp) >= 13 && digits_ahead(source, length, sp, 0) == (length - sp)) {
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} else if ((length - sp) >= 13 && num_digits[sp] == (length - sp)) {
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/* Step B2 */
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next_mode = C1_DECIMAL;
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db_p = bin_append_posn(15, 4, decimal_binary, db_p);
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@ -558,12 +560,12 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], unsigne
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sp += 2;
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} else {
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if ((gs1) && (source[sp] == '[')) {
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if (length - (sp + 1) >= 15 && digits_ahead(source, length, sp + 1, 15) == 15) {
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if (length - (sp + 1) >= 15 && num_digits[sp + 1] >= 15) {
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/* Step B4 */
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target[tp++] = 236; /* FNC1 and change to Decimal */
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sp++;
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next_mode = C1_DECIMAL;
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} else if (length - (sp + 1) >= 7 && digits_ahead(source, length, sp + 1, 0) == length - (sp + 1)) {
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} else if (length - (sp + 1) >= 7 && num_digits[sp + 1] == length - (sp + 1)) {
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/* Step B5 */
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target[tp++] = 236; /* FNC1 and change to Decimal */
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sp++;
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@ -602,10 +604,10 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], unsigne
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next_mode = current_mode;
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if (cte_p == 0) {
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/* Step C/D1 */
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if ((length - sp) >= 12 && digits_ahead(source, length, sp, 12) == 12) {
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if ((length - sp) >= 12 && num_digits[sp] >= 12) {
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/* Step C/D1a */
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next_mode = C1_ASCII;
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} else if ((length - sp) >= 8 && digits_ahead(source, length, sp, 0) == (length - sp)) {
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} else if ((length - sp) >= 8 && num_digits[sp] == (length - sp)) {
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/* Step C/D1b */
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next_mode = C1_ASCII;
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} else {
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@ -658,10 +660,10 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], unsigne
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next_mode = C1_EDI;
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if (cte_p == 0) {
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/* Step E1 */
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if ((length - sp) >= 12 && digits_ahead(source, length, sp, 12) == 12) {
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if ((length - sp) >= 12 && num_digits[sp] >= 12) {
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/* Step E1a */
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next_mode = C1_ASCII;
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} else if ((length - sp) >= 8 && digits_ahead(source, length, sp, 0) == (length - sp)) {
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} else if ((length - sp) >= 8 && num_digits[sp] == (length - sp)) {
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/* Step E1b */
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next_mode = C1_ASCII;
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} else if ((length - sp) < 3 || !isedi(source[sp]) || !isedi(source[sp + 1])
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@ -700,20 +702,17 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], unsigne
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} else if (current_mode == C1_DECIMAL) {
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/* Step F - Decimal encodation */
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int decimal_count;
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if (debug_print) printf("DECIMAL ");
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next_mode = C1_DECIMAL;
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decimal_count = digits_ahead(source, length, sp, 3);
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if (length - sp < 3) {
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/* Step F1 */
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int bits_left = 8 - db_p;
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int single_ascii = bits_left == 8 && is_last_single_ascii(source, length, sp);
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if (codewords_remaining(symbol, tp) == 1 && (single_ascii || (decimal_count == 1 && bits_left >= 4))) {
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if (single_ascii) {
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int can_ascii = bits_left == 8 && is_last_single_ascii(source, length, sp);
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if (codewords_remaining(symbol, tp) == 1 && (can_ascii || (num_digits[sp] == 1 && bits_left >= 4))) {
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if (can_ascii) {
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/* Encode last character or last 2 digits as ASCII */
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if (istwodigits(source, length, sp)) {
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target[tp++] = (10 * ctoi(source[sp])) + ctoi(source[sp + 1]) + 130;
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@ -732,15 +731,15 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], unsigne
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db_p = decimal_binary_transfer(decimal_binary, db_p, target, &tp);
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}
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} else {
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db_p = decimal_unlatch(decimal_binary, db_p, target, &tp, decimal_count, source, &sp);
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db_p = decimal_unlatch(decimal_binary, db_p, target, &tp, num_digits[sp], source, &sp);
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current_mode = C1_ASCII; /* Note need to set current_mode also in case exit loop */
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}
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next_mode = C1_ASCII;
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} else {
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if (decimal_count != 3) {
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if (num_digits[sp] < 3) {
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/* Step F2 */
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db_p = decimal_unlatch(decimal_binary, db_p, target, &tp, decimal_count, source, &sp);
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db_p = decimal_unlatch(decimal_binary, db_p, target, &tp, num_digits[sp], source, &sp);
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current_mode = next_mode = C1_ASCII; /* Note need to set current_mode also in case exit loop */
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} else {
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/* Step F3 */
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@ -2,7 +2,7 @@
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/*
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libzint - the open source barcode library
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Copyright (C) 2008 - 2020 Robin Stuart <rstuart114@gmail.com>
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Copyright (C) 2008 - 2021 Robin Stuart <rstuart114@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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@ -31,6 +31,9 @@
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*/
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/* vim: set ts=4 sw=4 et : */
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#ifndef FONT_H
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#define FONT_H
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typedef const unsigned short font_item;
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#define NORMAL_FONT_WIDTH 7
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@ -482,3 +485,5 @@ static font_item upcean_small_font[] = {
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/*38*/ 0x3C, 0x7E, 0x66, 0x42, 0x66, 0x3C, 0x3C, 0x66, 0xC3, 0xC3, 0xC3, 0x7E, 0x3C, /* 8 */
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/*39*/ 0x3C, 0x7E, 0xE7, 0xC3, 0xC3, 0xC3, 0xE3, 0x7E, 0x1E, 0x0C, 0x18, 0x30, 0x60, /* 9 */
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};
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#endif /* FONT_H */
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@ -67,13 +67,21 @@ static int numeric(const unsigned char *data, int data_len, int offset, int min,
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return 1;
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}
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/* Validate of character set 82 (GS1 General Spec Figure 7.11-1) */
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/* GS1 General Specifications 21.0.1 Figure 7.9.5-1. GS1 AI encodable character reference values.
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Also used to determine if character in set 82 */
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static const char c82[] = {
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0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, /*!-0*/
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14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, -1, /*1-@*/
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29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, /*A-P*/
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45, 46, 47, 48, 49, 50, 51, 52, 53, 54, -1, -1, -1, -1, 55, -1, /*Q-`*/
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56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, /*a-p*/
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72, 73, 74, 75, 76, 77, 78, 79, 80, 81, /*q-z*/
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};
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/* Validate of character set 82 (GS1 General Specifications Figure 7.11-1) */
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static int cset82(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
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int *p_err_posn, char err_msg[50]) {
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/* These 13 characters plus all <= ' ' = 13 + 33 = 46 + 82 = 128 */
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static const char not_in_set82[] = "#$@[\\]^`{|}~\177";
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data_len -= offset;
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if (data_len < min) {
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@ -85,7 +93,7 @@ static int cset82(const unsigned char *data, int data_len, int offset, int min,
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const unsigned char *de = d + (data_len > max ? max : data_len);
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for (; d < de; d++) {
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if (*d <= ' ' || strchr(not_in_set82, *d) != NULL) {
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if (*d < '!' || *d > 'z' || c82[*d - '!'] == -1) {
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*p_err_no = 3;
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*p_err_posn = d - data + 1;
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sprintf(err_msg, "Invalid CSET 82 character '%c'", *d);
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@ -97,7 +105,7 @@ static int cset82(const unsigned char *data, int data_len, int offset, int min,
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return 1;
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}
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/* Validate of character set 39 (GS1 General Spec Figure 7.11-2) */
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/* Validate of character set 39 (GS1 General Specifications Figure 7.11-2) */
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static int cset39(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
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int *p_err_posn, char err_msg[50]) {
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@ -125,7 +133,7 @@ static int cset39(const unsigned char *data, int data_len, int offset, int min,
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return 1;
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}
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/* Check a check digit (GS1 General Spec 7.9.1) */
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/* Check a check digit (GS1 General Specifications 7.9.1) */
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static int csum(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
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int *p_err_posn, char err_msg[50], const int length_only) {
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@ -160,7 +168,7 @@ static int csum(const unsigned char *data, int data_len, int offset, int min, in
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return 1;
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}
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/* Check alphanumeric check characters (GS1 General Spec 7.9.5) */
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/* Check alphanumeric check characters (GS1 General Specifications 7.9.5) */
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static int csumalpha(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
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int *p_err_posn, char err_msg[50], const int length_only) {
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(void)max;
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@ -176,14 +184,6 @@ static int csumalpha(const unsigned char *data, int data_len, int offset, int mi
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}
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if (!length_only && data_len) {
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static const char c82[] = {
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0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, /*!-0*/
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14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, -1, /*1-@*/
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29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, /*A-P*/
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45, 46, 47, 48, 49, 50, 51, 52, 53, 54, -1, -1, -1, -1, 55, -1, /*Q-`*/
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56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, /*a-p*/
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72, 73, 74, 75, 76, 77, 78, 79, 80, 81, /*q-z*/
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};
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static const char c32[] = "23456789ABCDEFGHJKLMNPQRSTUVWXYZ";
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static const char weights[] = {
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2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83
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@ -215,7 +215,7 @@ static int csumalpha(const unsigned char *data, int data_len, int offset, int mi
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return 1;
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}
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/* Check for a GS1 Prefix (GS1 General Spec GS1 1.4.2) */
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/* Check for a GS1 Prefix (GS1 General Specifications GS1 1.4.2) */
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static int key(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
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int *p_err_posn, char err_msg[50], const int length_only) {
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(void)max;
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@ -278,7 +278,7 @@ static int yymmd0(const unsigned char *data, int data_len, int offset, int min,
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}
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if (month == 2 && day == 29) { /* Leap year check */
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int year = to_int(data + offset, 2);
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if (year & 3) { /* Good until 2050 when 00 will mean 2100 (GS1 General Spec 7.12) */
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if (year & 3) { /* Good until 2050 when 00 will mean 2100 (GS1 General Specifications 7.12) */
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*p_err_no = 3;
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*p_err_posn = offset + 4 + 1;
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sprintf(err_msg, "Invalid day '%.2s'", data + offset + 4);
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@ -595,7 +595,7 @@ static int yesno(const unsigned char *data, int data_len, int offset, int min, i
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return 1;
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}
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/* Check for importer index (GS1 General Spec 3.8.17) */
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/* Check for importer index (GS1 General Specifications 3.8.17) */
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static int importeridx(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
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int *p_err_posn, char err_msg[50], const int length_only) {
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(void)max;
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@ -645,7 +645,7 @@ static int nonzero(const unsigned char *data, int data_len, int offset, int min,
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return 1;
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}
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/* Check winding direction (0/1/9) (GS1 General Spec 3.9.1) */
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/* Check winding direction (0/1/9) (GS1 General Specifications 3.9.1) */
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static int winding(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
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int *p_err_posn, char err_msg[50], const int length_only) {
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(void)max;
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@ -691,7 +691,7 @@ static int zero(const unsigned char *data, int data_len, int offset, int min, in
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return 1;
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}
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/* Check piece of a trade item (GS1 General Spec 3.9.6 and 3.9.17) */
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/* Check piece of a trade item (GS1 General Specifications 3.9.6 and 3.9.17) */
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static int pieceoftotal(const unsigned char *data, int data_len, int offset, int min, int max, int *p_err_no,
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int *p_err_posn, char err_msg[50], const int length_only) {
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(void)max;
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